stp配置根桥的命令问题？

本案例采用H3C HCL模拟器来模拟MSTP的部署，在网络拓扑图中已经明确标识了具体的设备和VLAN划分，其中SW部署IRF模式，SW2和SW3为接入交换机，为了实现链路冗余，将SW2和SW3连接起来，接着使用STP COST来指定端口的开销来实现链路的“主备”，在该网络拓扑中，SW2和SW3互联的端口都配置STP COST为100，这样不仅能避免环路，还能实现链路冗余。

1、部署SW的IRF：

 1号设备IRF部署：

sys

System View: return to User View with Ctrl+Z.

[H3C]irf member 1 renumber 1

Renumbering the member ID may result in configuration change or loss. Continue?[Y/N]:y

[H3C]int range ten 1/0/49 to ten 1/0/50

[H3C-if-range]shutdown

[H3C-if-range]quit

[H3C]irf-port 1/1

[H3C-irf-port1/1]port group interface Ten-GigabitEthernet 1/0/49

[H3C-irf-port1/1]port group interface Ten-GigabitEthernet 1/0/50

[H3C-irf-port1/1]quit

[H3C]int range ten 1/0/49 to ten 1/0/50

[H3C-if-range]undo shutdown

[H3C-if-range]quit

[H3C]irf-port-configuration active

[H3C]%Oct 24 10:07:34:375 2020 H3C STM/6/STM_LINK_UP: IRF port 1 came up.

[H3C]save

The current configuration will be written to the device. Are you sure? [Y/N]:y

Please input the file name(*.cfg)[flash:/startup.cfg]

(To leave the existing filename unchanged, press the enter key):

Validating file. Please wait...

Saved the current configuration to mainboard device successfully.

 2号设备IRF部署：

[H3C]irf member 1 renumber 2

Renumbering the member ID may result in configuration change or loss. Continue?[Y/N]:y

[H3C]int range ten 1/0/49 to ten 1/0/50

[H3C-if-range]shutdown

[H3C-if-range]quit

[H3C]irf-port 1/2

[H3C-irf-port1/2]port group interface Ten-GigabitEthernet 1/0/49

[H3C-irf-port1/2]port group interface Ten-GigabitEthernet 1/0/50

[H3C-irf-port1/2]quit

[H3C]int range ten 1/0/49 to ten 1/0/50

[H3C-if-range]undo shutdown

[H3C-if-range]quit

[H3C]save

The current configuration will be written to the device. Are you sure? [Y/N]:y

Please input the file name(*.cfg)[flash:/startup.cfg]

(To leave the existing filename unchanged, press the enter key):

Validating file. Please wait...

Saved the current configuration to mainboard device successfully.

[H3C]irf-port-configuration active

[H3C]%Oct 24 10:10:59:609 2020 H3C STM/6/STM_LINK_UP: IRF port 2 came up.

[H3C]save

The current configuration will be written to the device. Are you sure? [Y/N]:y

Please input the file name(*.cfg)[flash:/startup.cfg]

(To leave the existing filename unchanged, press the enter key):

flash:/startup.cfg exists, overwrite? [Y/N]:y

Validating file. Please wait...

Saved the current configuration to mainboard device successfully.

重启部署了IRF的两台设备。

IRF部署已完成：

1、配置SW的VLAN及MSTP

sys

System View: return to User View with Ctrl+Z.

[H3C]sysname SW

[SW]vlan 10

[SW-vlan10]quit

[SW]vlan 20

[SW-vlan20]quit

[SW]int range gi 1/0/1 gi 2/0/1

[SW-if-range]port link-type trunk

[SW-if-range]undo port trunk permit vlan 1

[SW-if-range]port trunk permit vlan 10 20

[SW-if-range]quit

[SW-if-range]quit

[SW]int vlan 10

[SW-Vlan-interface10]ip address 192.168.10.1 24

[SW-Vlan-interface10]quit

[SW]int vlan 20

[SW-Vlan-interface20]ip address 192.168.20.1 24

[SW-Vlan-interface20]quit

[SW]stp global enable

[SW]stp mode mstp

[SW]stp region-configuration

[SW-mst-region]instance 1 vlan 10 20

[SW-mst-region]region-name weijianing

[SW-mst-region]active region-configuration

[SW-mst-region]quit

[SW]stp instance 1 priority 0

SW2配置：

sys

System View: return to User View with Ctrl+Z.

[H3C]sysname SW2

[SW2]vlan 10

[SW2-vlan10]quit

[SW2]vlan 20

[SW2-vlan20]quit

[SW2]int range gi 1/0/1 to gi 1/0/2

[SW2-if-range]port link-type trunk

[SW2-if-range]undo port trunk permit vlan 1

[SW2-if-range]port trunk permit vlan 10 20

[SW2-if-range]quit

[SW2]int gi 1/0/3

[SW2-GigabitEthernet1/0/3]port link-type access

[SW2-GigabitEthernet1/0/3]port access vlan 10

[SW2-GigabitEthernet1/0/3]stp edged-port

Edge port should only be connected to terminal. It will cause temporary loops if port GigabitEthernet1/0/3 is connected to bridges. Please use it carefully.

[SW2-GigabitEthernet1/0/3]quit

[SW2]stp global enable

[SW2]stp mode mstp

[SW2]stp region-configuration

[SW2-mst-region]instance 1 vlan 10 20

[SW2-mst-region]region-name weijianing

[SW2-mst-region]active region-configuration

[SW2-mst-region]quit

[SW2]int gi 1/0/2

[SW2-GigabitEthernet1/0/2]stp cost 100

[SW2-GigabitEthernet1/0/2]quit

SW3配置：

sys

System View: return to User View with Ctrl+Z.

[H3C]sysname SW3

[SW3]vlan 10

[SW3-vlan10]quit

[SW3]vlan 20

[SW3-vlan20]quit

[SW3]int range gi 1/0/1 to gi 1/0/2

[SW3-if-range]port link-type trunk

[SW3-if-range]undo port trunk permit vlan 1

[SW3-if-range]port trunk permit vlan 10 20

[SW3-if-range]quit

[SW3]int gi 1/0/3

[SW3-GigabitEthernet1/0/3]port link-type access

[SW3-GigabitEthernet1/0/3]port access vlan 20

[SW3-GigabitEthernet1/0/3]stp edged-port

Edge port should only be connected to terminal. It will cause temporary loops if port GigabitEthernet1/0/3 is connected to bridges. Please use it carefully.

[SW3-GigabitEthernet1/0/3]quit

[SW3]stp global enable

[SW3]stp mode mstp

[SW3]stp region-configuration

[SW3-mst-region]instance 1 vlan 10 20

[SW3-mst-region]region-name weijianing

[SW3-mst-region]active region-configuration

[SW3-mst-region]quit

[SW3]int gi 1/0/2

[SW3-GigabitEthernet1/0/2]stp cost 100

[SW3-GigabitEthernet1/0/2]quit

具体的链接如下：

https://zhiliao.h3c.com/Theme/details/131035